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POST
If your workflow contains file inputs (type: file or array_files), you must upload files before executing the job. This endpoint generates a presigned URL for uploading.
Call this endpoint once for each file you need to upload. After receiving the presigned URL, proceed to Upload File to complete the upload.

Headers

string
required
Your API authentication key

Body Parameters

string
required
The file extension including the dot (e.g., .pdf, .docx)
string
Access scope for the file. Options: all, user, workspace, organization. If omitted, the file is uploaded as unlisted — tracked by the platform but not shown in the file library.
string
The original filename of the file being uploaded (e.g., Q4-Report.pdf). Surfaced in the Opus file library to make the file easier to identify later.
string
Target workspace ID for the file. Required when accessScope is workspace and workflowId is not provided.
string
Target workflow ID for the file. The workspace that owns this workflow becomes the owner of the file. Required when accessScope is workspace and workspaceId is not provided.

Supported File Types

The maximum file size for uploads is 10 MB. Files exceeding this limit will be rejected.

Response

string
required
Temporary URL for uploading your file. Use this in the Upload File step.
string
required
Permanent URL to reference this file in your Execute Job request.